Oracle Cloud Infrastructure (OCI) provides high data durability and availability as a core feature, enabling businesses to concentrate on their customer experience and economic success.
Oracle Maximum Availability Architecture
| Level | Comment | Customer-specific responsibility and risk | Customer-specific effort |
|---|---|---|---|
| Level 0 | Completely customer-driven | Largely complete | Very extensive |
| Level 1 | Customer-driven based on manufacturer recommendations | Extensive | Extensive |
| Level 2 | Customer-driven based on manufacturer components and core services: Infrastructure-as-a-service (IaaS) like | Limited | Limited |
| Level 3 | Customer-driven based on manufacturer services: IaaS+ like | Low | Low |
| Level 4 | Manufacturer-driven: Software-as-a-service (SaaS) like | Very low | Very low |
Oracle provides you with our Oracle Maximum Availability Architecture: A broad and proven range of assets to implement cloud resilience like we do. The following examples show our cloud resilience by default functionality:
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Level 2 live migration: During an infrastructure maintenance event, OCI migrates supported virtual machine (VM) instances from the physical VM host that needs maintenance to a healthy VM host without disrupting running instances.
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Level 2 Block Volume durability: The OCI Block Volume service offer a high level of data durability compared to standard, attached drives. All volumes are automatically replicated for you, helping protect against data loss. Multiple copies of data are stored redundantly across multiple storage servers with built-in repair mechanisms. For service level objectives, the Block Volume service is designed to provide 99.99% annual durability for block volumes and boot volumes. However, we recommend that you make regular backups to protect against the failure of an availability domain.
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Level 3 cross-region replication: Block Volume provides you with the capability to perform ongoing automatic asynchronous replication of block volumes, boot volumes, and volume groups to other regions.
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Level 3 volume groups: OCI Block Volume service provides you with the capability to group multiple volumes in a volume group. A volume group can include both types of volumes, boot volumes, which are the system disks for your Compute instances, and block volumes for your data storage. You can use volume groups to create volume group backups and clones that are point-in-time and crash-consistent.
OCI also ensures that your servers are cloud resilient by default, meaning that the server can survive the following outage scenarios with all your data in a consistent state:
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Server hardware defects (Live migration)
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Storage hardware defects (Block Volume durability)
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Fault domain down (Live migration)
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Availability domain down (Instance scaling)
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Region down (Policy-based backups and cross-region replication)
In the next-generation cloud repository, you can find general information about OCI. Cloud resilience and cloud resilience by default describe in detail how to implement Level 2 and 3 solutions. We also recommend using the Resilience and Continuous Availability of Oracle Cloud Infrastructure Services and Platform FAQ and Architect for Reliability.
Enterprises demand more than just availability from their cloud infrastructure. Mission-critical workloads also require consistent performance and the ability to manage, monitor, and modify resources running in the cloud at any time. Only Oracle offers end-to-end SLAs covering performance, availability, manageability of services.
Try it yourself
Keeping systems running without dealing Oracle Cloud Free Tier to validate and prove it to yourself.
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